Home / 78,050.44-107,708.76-42,239.68

Finding the Fourth Proportional to 78,050.44, 107,708.76 and 42,239.68

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Solution

The fourth proportional to 78,050.44, 107,708.76 and 42,239.68 is: 58,290.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,050.44 : 107,708.76 = 42,239.68 : x
  2. Step 2: Convert to fraction form
    78,050.44/107,708.76 = 42,239.68/x
  3. Step 3: Cross multiply
    78,050.44x = 107,708.76 × 42,239.68
  4. Step 4: Simplify right side
    78,050.44x = 4,549,583,555.60
  5. Step 5: Solve for x
    x = 4,549,583,555.60/78,050.44
  6. Step 6: Final answer
    x = 58,290.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.